1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mars2501 [29]
2 years ago
12

F(x)=6x-8 G(x)=-4x-7 Find 3f(x)-g(x)

Mathematics
1 answer:
miskamm [114]2 years ago
7 0
3(6x-8)-(-4x-7)
18x-24+4x+7
ANSWER= 22x-17
You might be interested in
Find if f(x) = 2x - 1 and g(x) = x + 2.
Readme [11.4K]

2x+3 is the answer.................................................................

7 0
2 years ago
In a sample of 1000 cases, the mean of a certain test is 14 and the standard deviation is 2.5. Assume the distribution to be nor
Maslowich

Answer:

The top 20% of the students will score at least 2.1 points above the mean.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

The mean of a certain test is 14 and the standard deviation is 2.5.

This means that \mu = 14, \sigma = 2.5

The top 20% of the students will score how many points above the mean

Their score is the 100 - 20 = 80th percentile, which is X when Z has a pvalue of 0.8. So X when Z = 0.84.

Their score is:

Z = \frac{X - \mu}{\sigma}

0.84 = \frac{X - 14}{2.5}

X - 14 = 0.84*2.5

X = 16.1

16.1 - 14 = 2.1

The top 20% of the students will score at least 2.1 points above the mean.

7 0
2 years ago
99pts and brainliest first to awnser A magazine wants to estimate the mean price of a large soda at restaurants in Mankato, Minn
Anit [1.1K]
I think that A would work, considering they're not looking for movie theaters prices.
7 0
3 years ago
Read 2 more answers
a marble was randomly selected from a bad containing 3 red marbles , 3 blue marbes and 3 green marbles . what is the probability
galina1969 [7]

Answer:

\frac{1}{3}

Step-by-step explanation:

If there are 9 marbles in total and the desired outcome is to pick a green marble then the probability is \frac{desired outcome}{totaloutcomes} = \frac{3}{9} which simplifies down to a third.

8 0
3 years ago
Read 2 more answers
10 ............... xxsitsktsjgcmgajtajtItjtJfjrzjtskyxmhhdktskyzktzkyxkhdkydktsjtsjtstj
omeli [17]
It’s like -5 or something maybe
7 0
3 years ago
Other questions:
  • The ShowMe Theater is showing 12 movies. Each movie is shown at five different times during during the day. How many choices of
    8·2 answers
  • 15x - 10 = -9x + 2 <br> please help me !!!!!
    15·1 answer
  • Lee scored 25 points in yesterday's game. That was 3 more than twice the number of points Alex scored.
    12·2 answers
  • 2. An elevator ascends, or goes up, at a rate of 750 feet per minute. Is the height
    14·2 answers
  • Quick algebra question 15 points and will mark brainliest if correct
    14·1 answer
  • How to square imaginary numbers
    13·1 answer
  • Evaluate 6n-2 for n=4.
    7·1 answer
  • What is the range of g?
    5·2 answers
  • I need help I’m on my last questionnn
    12·2 answers
  • Please help me with this math problem!! Will give brainliest!! NO LINKS PLEASE!! Thanks!! :)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!